Refractory clay is also called exothermic or joint material. Used as a refractory products masonry joint material.
By materials can be divided into clay, high alumina, silica and magnesia refractory mud. 
Composed of refractory powder, binder and additive. Refractory raw materials can be made for almost all of the powder used to compound refractory clay. With refractory clinker powder with the appropriate amount of plastic clay as binder and plasticizer and made known the ordinary refractory clay, the room temperature strength of low, high temperature formed ceramic combination has a higher strength. In hydraulic, air hardening or hot rigid binding material as the known chemical bond binding refractory clay, below the form ceramic combined with temperature before that produce a certain chemical reaction and hardening. Grain size of refractory mortar according to use requirements vary, the ultimate particle size generally less than 1mm, and some less than 0.5mm or more fine.
Composed of refractory powder, binder and additive. Refractory raw materials can be made for almost all of the powder used to compound refractory clay. With refractory clinker powder with the appropriate amount of plastic clay as binder and plasticizer and made known the ordinary refractory clay, the room temperature strength of low, high temperature formed ceramic combination has a higher strength. In hydraulic, air hardening or hot rigid binding material as the known chemical bond binding refractory clay, below the form ceramic combined with temperature before that produce a certain chemical reaction and hardening. Grain size of refractory mortar according to use requirements vary, the ultimate particle size generally less than 1mm, and some less than 0.5mm or more fine.
The selection of refractory slurry material should be considered with the refractory products masonry material consistent. Refractory clay except for joint materials can also be used to smear method or injection method is used as a protective coating liner.
Mud properties and application of refractory: 1, plasticity is good, the construction is convenient; 2, high bond strength, anti erosion ability; 3, high refractoriness, up to 1650 – 50 Deg. C; 4, good slag resistance, invasion; 5, good thermal spalling. Refractory clay is mainly used in the coke oven, glass furnace, hot blast furnace, and other industrial furnace.
The application of industry: metallurgy, building materials, machinery, petrochemical, electric power, boiler, glass, steel, cement and other.
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